Featured Content RSS Feed Showing Error

The featured content rss feed showing following error

Code:

An exception occurred: [Laminas\Feed\Writer\Exception\InvalidArgumentException] Invalid parameter: parameter must be a non-empty string in src/vendor/laminas/laminas-feed/src/Writer/Entry.php on line 250
Laminas\Feed\Writer\Entry->setId() in src/XF/Pub/View/FeaturedContent/Rss.php at line 66
XF\Pub\View\FeaturedContent\Rss->createEntry() in src/XF/Pub/View/FeaturedContent/Rss.php at line 23...

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